diff --git a/packages/kbn-config/src/__snapshots__/env.test.ts.snap b/packages/kbn-config/src/__snapshots__/env.test.ts.snap
index 39aae1dd9b2ff..e5d5a3816ced3 100644
--- a/packages/kbn-config/src/__snapshots__/env.test.ts.snap
+++ b/packages/kbn-config/src/__snapshots__/env.test.ts.snap
@@ -29,6 +29,7 @@ Env {
   "packageInfo": Object {
     "branch": "feature-v1",
     "buildDate": 2023-05-15T23:12:09.000Z,
+    "buildFlavor": "traditional",
     "buildNum": 9007199254740991,
     "buildSha": "XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX",
     "dist": false,
@@ -71,6 +72,7 @@ Env {
   "packageInfo": Object {
     "branch": "feature-v1",
     "buildDate": 2023-05-15T23:12:09.000Z,
+    "buildFlavor": "traditional",
     "buildNum": 9007199254740991,
     "buildSha": "XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX",
     "dist": false,
@@ -112,6 +114,7 @@ Env {
   "packageInfo": Object {
     "branch": "some-branch",
     "buildDate": 2023-05-15T23:12:09.000Z,
+    "buildFlavor": "traditional",
     "buildNum": 9007199254740991,
     "buildSha": "XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX",
     "dist": false,
@@ -153,6 +156,7 @@ Env {
   "packageInfo": Object {
     "branch": "feature-v1",
     "buildDate": 2023-05-15T23:12:09.000Z,
+    "buildFlavor": "traditional",
     "buildNum": 100,
     "buildSha": "feature-v1-build-sha",
     "dist": true,
@@ -194,6 +198,7 @@ Env {
   "packageInfo": Object {
     "branch": "feature-v1",
     "buildDate": 2023-05-15T23:12:09.000Z,
+    "buildFlavor": "traditional",
     "buildNum": 9007199254740991,
     "buildSha": "XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX",
     "dist": false,
@@ -235,6 +240,7 @@ Env {
   "packageInfo": Object {
     "branch": "feature-v1",
     "buildDate": 2023-05-15T23:12:09.000Z,
+    "buildFlavor": "traditional",
     "buildNum": 100,
     "buildSha": "feature-v1-build-sha",
     "dist": true,
diff --git a/packages/kbn-config/src/env.test.ts b/packages/kbn-config/src/env.test.ts
index 5203c34b73214..7c301ff83e6f4 100644
--- a/packages/kbn-config/src/env.test.ts
+++ b/packages/kbn-config/src/env.test.ts
@@ -208,3 +208,43 @@ test('pluginSearchPaths only includes kibana-extra, regardless of plugin filters
 
   expect(env4.pluginSearchPaths).toEqual(['/some/home/kibana-extra', '/some/home/dir/plugins']);
 });
+
+describe('packageInfo.buildFlavor', () => {
+  it('is set to `serverless` when the `serverless` cli flag is `true`', () => {
+    mockPackage.raw = {
+      branch: 'some-branch',
+      version: 'some-version',
+    };
+
+    const env = Env.createDefault(
+      REPO_ROOT,
+      getEnvOptions({
+        configs: ['/test/cwd/config/kibana.yml'],
+        cliArgs: {
+          serverless: true,
+        },
+      })
+    );
+
+    expect(env.packageInfo.buildFlavor).toEqual('serverless');
+  });
+
+  it('is set to `traditional` when the `serverless` cli flag is `false`', () => {
+    mockPackage.raw = {
+      branch: 'some-branch',
+      version: 'some-version',
+    };
+
+    const env = Env.createDefault(
+      REPO_ROOT,
+      getEnvOptions({
+        configs: ['/test/cwd/config/kibana.yml'],
+        cliArgs: {
+          serverless: false,
+        },
+      })
+    );
+
+    expect(env.packageInfo.buildFlavor).toEqual('traditional');
+  });
+});